Hidetoshi Nakata was my first soccer player who made me crazy about soccer when he was still in Rome. He retired though, I got new brilliant Japanese Player = Keisuke Honda. He is similar to Nakata in many points.
So I'm tracing him the most among Japanese players but I'm supporting all the other Japanese.
I set MCU as my club just because its fun to see their footy.

It's quite simple. You just need to enter any channel, for example chelsea or whatever other team you like, and beyond the pictures of players etc. in the right hand corner, there will be two options to choose, become a fan and become a rival. That's all there is to it

Don't mention it you can become a fan of national teams too, just pick 'teams', choose for example italy and find the logo of the national federation. If you have any other questions, feel free to ask anyway do you have any favorite japanese team? Cause I'm a fan of urawa red